Cover - shares	3 Months Ended
	Mar. 31, 2024	Apr. 29, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	1-4858
Entity Registrant Name	INTERNATIONAL FLAVORS & FRAGRANCES INC
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	13-1432060
Entity Address, Address Line One	521 West 57th Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10019
City Area Code	212
Local Phone Number	765-5500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		255,350,544
Entity Central Index Key	0000051253
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false
Other Address
Entity Information [Line Items]
Entity Address, Address Line One	200 Powder Mill Road
Entity Address, City or Town	Wilmington
Entity Address, State or Province	DE
Entity Address, Postal Zip Code	19803
Common Stock, par value 12 1/2¢ per share
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value 12 1/2¢ per share
Trading Symbol	IFF
Security Exchange Name	NYSE
1.800% Senior Notes due 2026
Entity Information [Line Items]
Title of 12(b) Security	1.800% Senior Notes due 2026
Trading Symbol	IFF 26
Security Exchange Name	NYSE